499
FZUS52 KJAX 020631
CWFJAX

Coastal Waters Forecast for Northeast Florida/Southeast Georgia
National Weather Service Jacksonville FL
231 AM EDT Tue Sep 2 2025

Atlantic Coastal Waters from Altamaha Sound GA to Flagler Beach
FL out to 60 nm.

Seas are provided as a range of the average height of the highest
1/3 of the waves, along with the occasional height of the average
highest 1/10 of the waves.

AMZ400-022145-
Synopsis for Altamaha Sound GA to Flagler Beach FL out to 60 nm-
231 AM EDT Tue Sep 2 2025

.SYNOPSIS...

Low pressure centered off the southeast Florida coast will move
slowly northeastward today and tonight as strong high pressure over
New England continues to wedge down the southeastern seaboard. Gusty
northeasterly winds and elevated seas will continue today,
keeping Small Craft Advisories in place throughout our local
waters. Persistent coastal troughing over our near shore waters
will continue to generate bands of showers and a few embedded
thunderstorms through midweek. Northeasterly winds will gradually
weaken tonight and Wednesday, allowing for seas to slowly
subside below Small Craft Advisory levels. Coverage of showers
and thunderstorms will then decrease on Thursday and Friday as low
pressure offshore weakens and a series of frontal boundaries
stalls to the northwest of our local waters.


.GULF STREAM...

The approximate location of the west wall of the Gulf Stream as of
Aug 30, 2025 at 1200 UTC...

 64 nautical miles east of Flagler Beach.
 73 nautical miles east of Saint Augustine Beach.
 82 nautical miles east of Jacksonville Beach.
 92 nautical miles east of St Simons Island.

This data courtesy of the Naval Oceanographic Office.

$$

AMZ450-452-454-022145-
Coastal waters from Altamaha Sound to Fernandina Beach FL out
20 NM-
Coastal waters from Fernandina Beach to St. Augustine FL out
20 NM-
Coastal waters from St. Augustine to Flagler Beach FL out 20 NM-
231 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast winds around 20 knots. Seas 6 to 7 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at 7
seconds. Intracoastal waters rough. A chance of showers with a
slight chance of thunderstorms.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 4 to 6 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at
7 seconds. Intracoastal waters choppy. A slight chance of showers
and thunderstorms.
.WEDNESDAY...Northeast winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 4 feet at 8
seconds. Intracoastal waters a moderate chop. A chance of showers
with a slight chance of thunderstorms.
.WEDNESDAY NIGHT...East northeast winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at
8 seconds. Intracoastal waters a light chop. A slight chance of
showers and thunderstorms.
.THURSDAY...East winds around 10 knots. Seas 2 to 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. Intracoastal waters a light
chop. A chance of showers with a slight chance of thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3
feet. Wave Detail: East 3 feet at 8 seconds. Intracoastal waters
mostly smooth. A slight chance of showers and thunderstorms,
mainly during the evening.
.FRIDAY...Northeast 5 to 10 knots, becoming east around 10 knots
during the afternoon. Seas around 2 feet. Intracoastal waters
becoming a light chop. A slight chance of showers and
thunderstorms, mainly during the afternoon.
.FRIDAY NIGHT AND SATURDAY...Southeast winds 5 to 10 knots,
becoming east around 10 knots during the afternoon. Seas around 2
feet. Intracoastal waters mostly smooth. A slight chance of
showers and thunderstorms, mainly during the afternoon and
evening.

Winds and waves higher in and near thunderstorms.

$$

AMZ470-472-474-022145-
Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to
60 NM-
Waters from Fernandina Beach to St. Augustine FL from 20 to 60 NM-
Waters from St. Augustine to Flagler Beach FL from 20 to 60 NM-
231 AM EDT Tue Sep 2 2025

...SMALL CRAFT ADVISORY IN EFFECT THROUGH THIS AFTERNOON...

.TODAY...Northeast winds around 20 knots. Seas 6 to 7 feet,
occasionally to 8 feet. Wave Detail: Northeast 6 feet at 8
seconds. Showers likely with a slight chance of thunderstorms.
.TONIGHT...Northeast winds 15 to 20 knots. Seas 5 to 6 feet,
occasionally to 8 feet. Wave Detail: North 6 feet at 7 seconds. A
chance of showers with a slight chance of thunderstorms.
.WEDNESDAY...Northeast winds around 15 knots. Seas 4 to 5 feet,
occasionally to 6 feet. Wave Detail: Northeast 5 feet at 8
seconds. A chance of showers with a slight chance of
thunderstorms.
.WEDNESDAY NIGHT...East northeast winds 10 to 15 knots. Seas 3 to
4 feet, occasionally to 5 feet. Wave Detail: Northeast 4 feet at
8 seconds. A chance of showers with a slight chance of
thunderstorms.
.THURSDAY...East winds around 10 knots. Seas around 3 feet. Wave
Detail: Northeast 3 feet at 8 seconds. A chance of showers and
thunderstorms.
.THURSDAY NIGHT...Southeast winds 5 to 10 knots. Seas 2 to 3
feet. Wave Detail: East 3 feet at 8 seconds. A slight chance of
showers and thunderstorms.
.FRIDAY...Northeast 5 to 10 knots, becoming east around 10 knots
during the afternoon. Seas 2 to 3 feet. A slight chance of
showers and thunderstorms.
.FRIDAY NIGHT AND SATURDAY...Southeast winds 5 to 10 knots,
becoming east northeast during the afternoon. Seas around 2 feet.
A slight chance of showers and thunderstorms.

Winds and seas higher in and near thunderstorms.

$$